If you are a developer or looking to get into developing, the collection of resources below should be of use. All focus on Android devices only and include the latest Android developer news, instructions, tips and tricks.
Android.com (developer training guide) > https://developer.android.com/training/index.html
For any Android developer, this should be your starting point. Android’s official developer’s portal lists out a comprehensive range of teaching ‘classes’ that guide you through how to accomplish specific tasks such as building apps and collaborating with other developers.
Android Developers (Google Blog) > https://android-developers.googleblog.com/
This site is aimed at the more advanced Android developers. The in-depth (and quite technical) blog posts provide some useful insights into the world of Android coding, as well as related news and updates.
Android Developers (YouTube channel) > https://www.youtube.com/user/androiddevelopers
If you prefer consuming your Android-related news and updates via video (rather than reading blog posts), we recommend heading over to Android’s official YouTube channel where you’ll find tutorials, announcements and code testing by the experts.
XDA Developers > https://www.xda-developers.com/
What should be the homepage for any Android developer, XDA hosts a useful forum with customized ROM downloads, as well as discussions, blog posts, product reviews and coding guides.